Cannot get the laptop to work

I have a problem, in January 2007 I purchased a new HP laptop/notebook costing almost $400.00 from through Laptops Direct. I am not new to computers however although I read the instructions something went wrong when the machine installed the software, I couldn't use it. For the first two months I tried to get support from laptops Direct to no avail. They then passed me over to HP Support and for the past six months I have been trying through them to get the machine to work, again to no avail. In desperation some three weeks ago I wrote to the sales Director of each firm explaining my plight and asking for help. To date I still cannot get the machine to work and although Customer Services have told their support people to get in touch with me there has been no response.